Its critics accuse it of being black supremacist and antisemitic.When the Old Etonian financier discovered his wife’s year-long relationship with Electronica after seeing some of their text messages, he was so angry that he is said to have slapped her and kicked a child’s toy at her.She called the police and Goldsmith later accepted a formal caution.In February, Electronica was involved in a heated exchange with bouncers at a Soho nightclub after Kate was allowed in to a Prince gig but he was refused entry.